The one who keeps contacting me I probably wouldn't take back. he was an arse. this last years ex.

When I was I'm my twenties, a guy who dumped me came back and started calling again a good couple of years later and there had been no contact. we only went.on a handful of dates and was the weirdest thing ever

I'm definitely not an expert in these matters, but you could just text him and ask how things are going, and then if he is interested it leaves it open for him to ask you out maybe. At least you'll know one way or the other and can move on if he's not up for it. Nothing ventured etc.